Nut and bolt lock



(No Model.)

M. A. LEE.

NUT AND BOLT LOCK.

No. 463,521. PatentedNov. 17,1891;

- mmlmmv NITED STATES P TENT OFFICE.

MART A. LEE, OF XVINDSOR,ASSIGNOR OF ONE-HALF TO JOSEPH R. BRAVO, OF BINGHAMTON, NEWV YORK.

NUT AND BOLT LOCK.

SPECIFICATION forming part of Letters Patent No. 463,521, dated November 17, 1891.

' Application filed April 18, 1891. smart. 389,532. (No model.)

T0 all whom it may concern:

Be it known that I, MART A. LEE,of Windsor, in the county of Broome and State of New York, have invented certain new and useful Improvements in Nut and Bolt Locks, of which the following is a specification.

This invention consists in a device to prevent a nut from turning and releasing objects bolted together, and is especially applicable to bolts in use on track-work for loco motive and car construction, and for use in other places or conditions where frequent jar creates a liability to loosen the nut.

In the accompanying drawings, Figure 1 is a View of my invention, partly in longitudinal section. Figs. 2, 3, 4, and 5 represent details hereinafter described.

Similar letters of reference indicate similar parts in the respective figures.

A is a bolt, having a threaded portion at one end, upon which is screwed a nut B.

O is a sleeve bored at a to loosely fit over the bolt, the sleeve being given exteriorly a tapered form, as shown in Figs. 1 and 5, and having recesses Cb, into which fit projections 19, extending from the under face ofthe nut B. The construction is such that as the nut is turned the sleeve G will turn with it. It is obvious that the projections may be u pen the sleeve instead of on the nut and the recesses in the latter. The sleeve 0 is cut, as at c, in one of the Ways shown in Fig. 2 or Fig. 3, the cut preferably extending the entire length of the sleeve, whereby the latter is given a certain degree of elasticity.

D is a collarhaving a tapered hole d to receive the sleeve O.

The several parts are shown in position in Fig. 1. in Fig. 4c, and detached views of the sleeve 0 are given in Figs. 2, 3, and 5.

The operation is as follows: Then two or more objectsare to be secured together by means of this device, the face of the collar D A face view of the collar D is shown toward the head of the bolt A is pressed 5 against the object with which it is to engage by applying awrench to the not B. The engagement of the nut B and sleeve O through the medium of the projections b and recesses 0. causes the nut and sleeve to be turned tO-,5o

gether, and the sleeve is pushed into the tapering hole d of the collar D, causing excessive friction, the collar at the same time being firmly forced against the object to be secured. unscrew or loosen, the sharp edge of the cut 0 in the sleeve would cut into the collar, while at the same time the friction ,of the sleeve in the collar would be so excessive that it would Should the nut have a tendency to be impossible for it to become released. The

cut 0 in the sleeve O maybe radial, as shown in Fig. 2, or diagonal, as seen in Fig. 3. I do not restrict myself to the precise nature of the cut or to the number of the recesses in the sleeve or nut adapted to engage With the projections of the nut or sleeve. A side of the collar D is preferably flattened, as repsented by 6, so that when in engagement with an object the collar itself may be prevented from turning.

Having described my invention, I claim- The combination, with a threaded bolt, of a collar fitting loosely over said bolt and being tapered interiorly, an exteriorly tapered sleeve adapted to passfreely over the bolt 

